CN219103859U - Electronic detonator firing resistor resistance measuring circuit - Google Patents
Electronic detonator firing resistor resistance measuring circuit Download PDFInfo
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- CN219103859U CN219103859U CN202223442797.XU CN202223442797U CN219103859U CN 219103859 U CN219103859 U CN 219103859U CN 202223442797 U CN202223442797 U CN 202223442797U CN 219103859 U CN219103859 U CN 219103859U
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Abstract
The utility model provides a circuit for measuring the resistance of an electronic detonator firing resistor, which can realize effective test of the resistance of the firing resistor; the device comprises a voltage stabilizing module, a current generating module and an amplifying module which are sequentially connected, wherein the voltage stabilizing module is connected with the firing resistor and is used for receiving the voltage of the firing resistor end and performing low-voltage conversion; the current generation module is used for receiving the converted low-voltage signal and outputting a current signal; the amplifying module is also connected with the controller and used for amplifying the received current signal and transmitting the amplified current signal to the control module so as to obtain the resistance value of the ignition resistor.
Description
Technical Field
The utility model relates to the technical field of electronic detonator detection equipment, in particular to a circuit for measuring the firing resistance and the resistance of an electronic detonator.
Background
The electronic detonator needs to perform self-checking on all functions before being used on site, wherein the self-checking of the firing resistance of the detonator is particularly important, because if the firing resistance breaks or the resistance value becomes large due to oxidization and the like, the powder head cannot be normally ignited, and thus the detonators and the explosive which are not detonated can remain on the blasting site. Mechanical equipment damage and even casualties are easily caused when the detonator is cleared, so that the resistance value of the firing resistor of the detonator must be detected, and the detonator with abnormal resistance is removed in advance.
Disclosure of Invention
In order to solve the problems, the utility model provides a circuit for measuring the resistance value of the firing resistor of an electronic detonator, which can realize effective test of the resistance value of the firing resistor.
The technical scheme is as follows: the electronic detonator ignition resistor resistance measuring circuit comprises a voltage stabilizing module, a current generating module and an amplifying module which are connected in sequence,
the voltage stabilizing module is connected with the ignition resistor and is used for receiving the voltage of the ignition resistor end and performing low-voltage conversion;
the current generation module is used for receiving the converted low-voltage signal and outputting a current signal;
the amplifying module is also connected with the controller and used for amplifying the received current signal and transmitting the amplified current signal to the controller so as to obtain the resistance value of the ignition resistor.
Optionally, the voltage stabilizing module comprises diodes D1-D4, capacitors C1 and C2 and resistors R1-R4; the current generation module comprises a constant current source; the amplifying module comprises an amplifier U1, a resistor R5, and capacitors C3 and C4; the controller adopts a control chip of model STM32F103C8T 6; one end of the resistor R1 is connected with one end of the resistor R4, the other end of the resistor R4 is connected with the cathode of the diode D3, the anode of the diode D4, one end of the capacitor C2 and the 2 pin of the amplifier U1, the cathode of the diode D4 is connected with the power supply 5V, the other end of the capacitor C2 is grounded, the anode of the diode D3 is connected with the anode of the diode D2 and then grounded, one end of the resistor R3 is connected with the cathode of the diode D2, the anode of the diode D1, one end of the capacitor C1 and the 3 pin of the amplifier U1, the other end of the resistor R3 is connected with the cathode of the diode D1 and the power supply 5V, the other end of the capacitor C1 is grounded, the two ends of the resistor R5 are connected between the 1 and 8 pins of the amplifier U1, one end of the capacitor C3 and the other end of the capacitor C4 are connected with the 7 pin of the amplifier U1 and then the power supply 5V, the other end of the capacitor C3 and the other end of the capacitor C4 are connected with the amplifier U1 and then the amplifier U4 and the other end of the capacitor U1 are connected with the amplifier 6 and the amplifier U1 and the other end of the pin is connected with the amplifier U1 and the amplifier 1 and the pin is connected with the pin 1 and the pin 1 is the pin is connected with the pin 3 and the pin is well;
optionally, the voltage stabilizing module is connected with an external power supply, and the voltage range of the external power supply is 5V-40V; the output voltage of the voltage stabilizing module is 5V; the constant current output current of the constant current source is 2mA.
The voltage stabilizing module converts the voltage at the firing resistor end into output low voltage after receiving the voltage, and the controller can obtain the resistance value of the firing resistor after passing through the current generating module and the amplifying module, so that the effective measurement of the resistance value of the firing resistor is realized, and the accuracy of resistance value detection is improved.
Drawings
FIG. 1 is a block diagram of the structure of the present utility model;
fig. 2 is a schematic diagram of a connection circuit of the present utility model.
Detailed Description
As shown in fig. 1 and 2, the utility model relates to a circuit for measuring the firing resistance and the resistance value of an electronic detonator, which comprises a voltage stabilizing module 2, a current generating module 3 and an amplifying module 4 which are connected in sequence,
the voltage stabilizing module 2 is connected with the ignition resistor 1 and is used for receiving the voltage of the end of the ignition resistor 1 and performing low-voltage conversion so as to supply power to the constant current source;
the current generation module 3 is used for receiving the converted low-voltage signal and outputting a current signal;
the amplifying module 4 is further connected to the controller 5, and is configured to amplify the received current signal and transmit the amplified current signal to the controller, thereby obtaining the resistance value of the ignition resistor 1.
The voltage stabilizing module 2 comprises diodes D1-D4, capacitors C1 and C2 and resistors R1-R4; the current generation module 3 includes a constant current source of model LT 3092; the amplifying module 4 comprises an amplifier U1, a resistor R5 and capacitors C3 and C4; the controller 5 adopts a control chip of model STM32F103C8T 6; one end of a resistor R1 is connected with one end of a resistor R4, the other end of the resistor R4 is connected with the cathode of a diode D3, the anode of the diode D4, one end of a capacitor C2 and the 2 pins of an amplifier U1, the cathode of the diode D4 is connected with a power supply 5V, the other end of the capacitor C2 is grounded, the anode of the diode D3 is connected with the anode of the diode D2 and then grounded, one end of the resistor R3 is connected with the cathode of the diode D2, the anode of the diode D1, one end of the capacitor C1 and the 3 pin of the amplifier U1, the other end of the resistor R3 is connected with the output end of a constant current source, the cathode of the diode D1 is connected with a power supply 5V, the other end of the capacitor C1 is grounded, the two ends of the resistor R5 are connected between the 1 and 8 pins of the amplifier U1, one end of the capacitor C3 and the C4 is connected with the 7 pin of the amplifier U1 and then grounded, the other ends of the capacitor C3 and C4 are connected with the 4 and 5 pin of the amplifier U1 and then grounded, and the 6 pin of the amplifier U1 is connected with the controller 5; the voltage stabilizing module 2 is connected with an external power supply, and the voltage range of the external power supply is 5V-40V; the output voltage of the voltage stabilizing module 2 is 5V; the constant current output current of the constant current source was 2mA.
In the utility model, the ends P1 and P2 in the figure are connected to the two ends of the ignition resistor 1, the voltage stabilizing module 2 converts the voltage received by the ends of the ignition resistor 1 into output low voltage so as to supply power to the constant current source, the current output by the constant current source flows through the ignition resistor 1, the voltage at the two ends of the ignition resistor 1 is amplified by the operation of the amplifying module 4 and transmitted to the controller 5, the resistance value of the ignition resistor 1 can be obtained, meanwhile, the offset voltage of the operational amplifier can be corrected by the resistor R1, and the resistors R3 and R4 are RC filter resistors, so that the accuracy of resistance value detection can be improved.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (3)
1. The utility model provides an electronic detonator firing resistor resistance measuring circuit which characterized in that: comprises a voltage stabilizing module, a current generating module and an amplifying module which are connected in sequence, wherein,
the voltage stabilizing module is connected with the ignition resistor and is used for receiving the voltage of the ignition resistor end and performing low-voltage conversion;
the current generation module is used for receiving the converted low-voltage signal and outputting a current signal;
the amplifying module is also connected with the controller and used for amplifying the received current signal and transmitting the amplified current signal to the controller so as to obtain the resistance value of the ignition resistor.
2. The electronic detonator firing resistor resistance measurement circuit of claim 1 wherein: the voltage stabilizing module comprises diodes D1-D4, capacitors C1 and C2 and resistors R1-R4; the current generation module comprises a constant current source; the amplifying module comprises an amplifier U1, a resistor R5, and capacitors C3 and C4; the controller adopts a control chip of model STM32F103C8T 6; one end of the resistor R1 is connected with one end of the resistor R4, the other end of the resistor R4 is connected with the cathode of the diode D3, the anode of the diode D4, one end of the capacitor C2 and the 2 pin of the amplifier U1, the cathode of the diode D4 is connected with the power supply 5V, the other end of the capacitor C2 is grounded, the anode of the diode D3 is connected with the anode of the diode D2 and then grounded, one end of the resistor R3 is connected with the cathode of the diode D2, the anode of the diode D1, one end of the capacitor C1 and the 3 pin of the amplifier U1, the other end of the resistor R3 is connected with the other end of the resistor R3, the cathode of the diode D1 is connected with the power supply 5V, the other end of the capacitor C1 is grounded, the two ends of the resistor R5 are connected between the 1 and 8 pins of the amplifier U1, one end of the capacitor C3 and the other end of the capacitor C4 are connected with the 7 pin of the amplifier U1 and then the power supply 5V, and the other end of the capacitor C4 is connected with the amplifier U1 and then the amplifier U1 and the other end of the capacitor C4 is connected with the amplifier U1 and the amplifier 6.
3. The electronic detonator firing resistor resistance measurement circuit of claim 2 wherein: the voltage stabilizing module is connected with an external power supply, and the voltage range of the external power supply is 5V-40V; the output voltage of the voltage stabilizing module is 5V; the constant current output current of the constant current source is 2mA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223442797.XU CN219103859U (en) | 2022-12-22 | 2022-12-22 | Electronic detonator firing resistor resistance measuring circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223442797.XU CN219103859U (en) | 2022-12-22 | 2022-12-22 | Electronic detonator firing resistor resistance measuring circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219103859U true CN219103859U (en) | 2023-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223442797.XU Active CN219103859U (en) | 2022-12-22 | 2022-12-22 | Electronic detonator firing resistor resistance measuring circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219103859U (en) |
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2022
- 2022-12-22 CN CN202223442797.XU patent/CN219103859U/en active Active
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